diff --git a/docs/conf.py b/docs/conf.py
index fdd07bc..944e8d1 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -5,3 +5,8 @@
 linkcheck_anchors_ignore = [
     r"diff-.*",
 ]
+
+# Enable version chooser.
+html_context.update({
+    "display_version": True,
+})
diff --git a/docs/requirements.txt b/docs/requirements.txt
index ced14fe..a8c4aa7 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-crate-docs-theme
+crate-docs-theme>=0.35.0